What paper and envelopes are used? Postworks print on smooth, uncoated, bright white 100gsm paper, which is FSC certified. We use bright white 90gsm C5 and C4 window envelopes, PEFC certified.
![Logo (transparent background, red emblem, red text, tagline NOT included) (PRIVATE).png]](https://support.postworks.co.uk/hs-fs/hubfs/Logo%20(transparent%20background%2c%20red%20emblem%2c%20red%20text%2c%20tagline%20NOT%20included)%20(PRIVATE).png?height=40&name=Logo%20(transparent%20background%2c%20red%20emblem%2c%20red%20text%2c%20tagline%20NOT%20included)%20(PRIVATE).png){kind=small}